A reflex test of the knee is the basis for the term knee-jerk reaction.. A knee-jerk reaction is typically impulsive in nature and doesn't allow for someone to think things through. An outburst of anger is an example of a knee-jerk reaction.
As Figure 1 shows, the central processing unit consists of two parts: The control unit and the arithmetic/logic unit. Each part has a specific function. Before we discuss the control unit and the arithmetic/logic unit in detail, we need to consider data storage and its relationship to the central processing unit.
Unit 1 basic structure of computers. 1  1. UNIT 1 - Basic Structure of Computers. 2  2. 3  Functional Units. 4  3. Functional Units Arithmetic Input and logic Memory Output Control I/O Processor Figure 1.1. 5  Basic functional units of a computer.6  4.nit 1 basic structure of computers. 1  1. UNIT 1 - Basic Structure of Computers. 2  2. 3  Functional Units. 4  3. Functional Units Arithmetic Input and logic Memory Output Control I/O Processor Figure 1.1. 5  Basic functional units of a computer. 6  4.